SG1846

Rev 1.1a

Copyright

© 1994

11861 Western Avenue

∞

∞

∞

∞

∞ Garden Grove, CA 92841

4

(714) 898-8121

∞

∞

∞

∞

∞ FAX: (714) 893-2570

Max. Min. Typ. Max.

Typ.

SG3846

Parameter

Test Conditions

Units

SG1846

SG2846

7.7

0.75

8.0

7.7

0.75

8.0

V

V

Note 4. These parameters although guaranteed over the recommended

operating conditions, are not tested in production.

Note 5. Parameter measured at trip point of latch with V

V

Note 6. Amplifier gain defined as : G =

; V

PIN 4

= 0V to 1.0V

Note 7. Current into Pin 1 guaranteed to latch circuit in shutdown state.

Note 8. Current into Pin 1 guaranteed not to latch circuit in shutdown

state.

Note 9. R

Min.

CHARACTERISTIC CURVES

FIGURE 1.

REFERENCE VOLTAGE VS. TEMPERATURE

FIGURE 2.

V

FIGURE 3.

CURRENT SENSE THRESHOLD

VS. ERROR AMPLIFIER OUTPUT

FIGURE 4.

CURRENT SENSE GAIN VS. TEMPERATURE

FIGURE 5.

OSCILLATOR VALLEY VOLTAGE VS. TEMPERATURE

FIGURE 6.

OSCILLATOR PEAK VOLTAGE VS. TEMPERATURE

Under-Voltage Lockout Section

Start-Up Threshold

Threshold Hysteresis

Total Standby Current

Supply Current

17

21

17

21

mA

∆ V

PIN 7

∆ V

PIN 4